Fuel supply control for engine compressors

Claim 1

AN AUTOMATIC CONTROLLING DEVICE OF THE CHARACTER DESCRIBED COMPRISING, IN COMBINATION, A CONDUIT THROUGH WHICH COMPRESSED GAS FLOWS DURING DELIVERY THEREOF, SAID CONDUIT HAVING A REDUCED PORTION OF LESSER CROSS-SECTION THAN OTHER PORTIONS OF SAID CONDUIT SO THAT THE GAS FLOWING THROUGH SAID REDUCED CONDUIT PORTION HAS GREATER DYNAMIC AND LESSER STATIC PRESSURE THAN THE GAS IN THE OHER PORTIONS OF SAID CONDUIT, SAID DYNAMIC PRESSURE IN SAID REDUCED CONDUIT PORTION INCREASING AND SAID STATIC PRESSURE DECREASING WHEN THE RATE OF DELIVERY OF GAS THROUGH SAID CONDUIT INCREASES AND VICE VERSA; A SUPPORT; CONTROL MEANS MOUNTED ON SAID SUPPORT FOR RECIPROCATING MOVEMENT AND HAVING AT LEAST A PAIR OF ACTING FACES FACING IN OPPOSITE DIRECTION AND EXTENDING IN A DIRECTION TRANSVERSE TO THE DIRECTION OF MOVEMENT OF SAID CONTROL MEANS, THE TOTAL AREA OF ONE OF SAID ACTING FACES BEING CONSIDERABLY LARGER THAN THE TOTAL AREA OF THE OTHER OF SAID ACTING FACES; MEANS FOR APPLYING ONLY THE STATIC PRESSURE FROM SAID REDUCED PORTION OF LESSER CROSS-SECTION OF SAID CONDUIT TO ONE OF SAID ACTING FACES AND THE STATIC PRESSURE FROM ONE OF THE OTHER PORTIONS OF SIAD CONDUIT TO THE OTHER OF SAID ACTING FACES SO THAT SAID CONTROL MEANS TENDS TO MOVE UNDER THE DIFFERENCE OF FORCES ACTING ON SAID ACTING FACES THEREOF IN ONE DIRECTION, WHEREBY A SUBSTANTIAL FORCE DIFFERENCE IS OBTAINED WITH A MINIMUM OF STATIC PRESSURE DIFFERENCE IN SAID REDUCED AND SAID OTHER PORTIONS OF SAID CONDUIT SO THAT THE REDUCTION OF THE CROSSSECTION IN SAID CONDUIT CAN BE HELD TO A MINIMUM THUS AVOIDING INCREASED FLOW LOSSES OF THE GAS PASSING THROUGH SAID REDUCED CROSS-SECTION, SAID CONTROL MEANS RESPONDING ONLY TO THE DIFFERENTIAL BETWEEN SAID STATIC PRESSURES; SPRING MEANS OPERATIVELY CONNECTED TO SAID CONTROL MEANS AND TENDING TO MOVE THE SAME IN A DIRECTION OPPOSITE TO SAID ONE DIRECTION; AND MOTION TRANSMITTING MEANS CONNECTING SAID CONTROL MEANS TO A CONTROLLING MEMBER FOR MOVING THE LATTER.